超级电容器
材料科学
碳纳米管
纳米技术
纺纱
电容
数码产品
复合材料
微流控
黑磷
储能
功率密度
光电子学
电极
功率(物理)
电气工程
化学
工程类
物理
物理化学
量子力学
作者
Xingjiang Wu,Yi‐Jun Xu,Ying Hu,Guan Wu,Su Chen,Qiang Yu,Kai Zhang,Wei Chen
标识
DOI:10.1038/s41467-018-06914-7
摘要
Flexible supercapacitors have recently attracted intense interest. However, achieving high energy density via practical materials and synthetic techniques is a major challenge. Here, we develop a hetero-structured material made of black phosphorous that is chemically bridged with carbon nanotubes. Using a microfluidic-spinning technique, the hybrid black phosphorous-carbon nanotubes are further assembled into non-woven fibre fabrics that deliver high performance as supercapacitor electrodes. The flexible supercapacitor exhibits high energy density (96.5 mW h cm-3), large volumetric capacitance (308.7 F cm-3), long cycle stability and durability upon deformation. The key to performance lies in the open two-dimensional structure of the black phosphorous/carbon nanotubes, plentiful channels (pores <1 nm), enhanced conduction, and mechanical stability as well as fast ion transport and ion flooding. Benefiting from this design, high-energy flexible supercapacitors can power various electronics (e.g., light emitting diodes, smart watches and displays). Such designs may guide the development of next-generation wearable electronics.
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